<template>
  <div class="login_body">
    <div class="bg" />
    <div class="box">
      <div class="title">智慧园区-登录</div>
      <el-form ref="form" :model="formData" :rules="rules">
        <el-form-item label="账号" prop="username">
          <el-input v-model="formData.username" />
        </el-form-item>

        <el-form-item label="密码" prop="password">
          <el-input v-model="formData.password" show-password />
        </el-form-item>

        <el-form-item prop="remember">
          <el-checkbox v-model="formData.remember">记住我</el-checkbox>
        </el-form-item>
      </el-form>
      <div class="login_btn">
        <el-button type="primary" @click="resetLogin()">重置</el-button>
        <el-button type="primary" @click="doLogin()">登录</el-button>
      </div>
    </div>
  </div></template>

<script>
// 记住登录状态
// 实现思路：
// 1. 完成选择框的双向绑定 得到一个true或者false的选中状态
// 2. 如果当前为true，点击登录时，表示要记住，把当前的用户名和密码存入本地
// 3. 组件初始化的时候，从本地取账号和密码，把账号密码存入用来双向绑定的form身上
// 4. 如果当前用户没有记住，状态为false，点击登录的时候要把之前的数据清空
const FORMDATA_KEY = 'form_key'

export default {
  name: 'Login',
  data() {
    return {
      formData: {
        username: '',
        password: '',
        remember: false
      },
      rules: {
        username: [{ required: true, message: '请输入账号', trigger: 'blur' }],
        password: [{ required: true, message: '请输入密码', trigger: 'blur' }]
      }
    }
  },
  mounted() {
    const cacheFormStr = localStorage.getItem(FORMDATA_KEY)
    if (cacheFormStr) {
      const cacheFormData = JSON.parse(cacheFormStr)
      this.formData.username = cacheFormData.username
      this.formData.password = cacheFormData.password
      this.formData.remember = true
    }
  },
  methods: {
    doLogin() {
      this.$refs.form.validate(async(valid) => {
        if (valid) {
          // TODO
          console.log('登录')
          const { username, password, remember } = this.formData
          await this.$store.dispatch('user/doLogin', { username, password })

          if (remember) {
            localStorage.setItem(FORMDATA_KEY, JSON.stringify({ username, password }))
          } else {
            localStorage.removeItem(FORMDATA_KEY)
          }
          this.$router.push('/')
        }
      })
    },
    resetLogin() {
      this.$refs.form.resetFields()
      localStorage.removeItem(FORMDATA_KEY)
    }
  }
}
</script>

<style scoped lang="scss">
.login_body {
  display: flex;
}

.bg {
  width: 60vw;
  height: 100vh;
  background: url("~@/assets/login-bg.svg") no-repeat;
  background-position: right top;
  background-size: cover;
}

.box {
  margin: 200px 10% 0;
  flex: 1;

  .title {
    padding-bottom: 76px;
    font-size: 26px;
    font-weight: 500;
    color: #1e2023;
  }

  ::v-deep() {
    .ant-form-item {
      display: flex;
      margin-bottom: 62px;
      flex-direction: column;
    }

    .ant-form-item-label label {
      font-size: 16px;
      color: #8b929d;
    }

    .ant-input,
    .ant-input-password {
      border-radius: 8px;
    }
  }
}

.login_btn {
  width: 50%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 20px auto 0;
}

</style>
